Threaded Road Ceramic Hybrid BB for 24mm Cranks (Shimano) - Gray
External English (BSA) threaded road bottom bracket for 68mm shells. We use only Enduro bearings and silicone seals for the most durable and smoothest bottom brackets available. Fully serviceable.
- (2) - Enduro Silicone dust seals
- (1) - 2.5mm aluminum BB cup spacer
- (2) - 0.5mm crank spindle spacers
- (2) - 1.0mm crank spindle spacers
Direct replacement for Shimano HollowTech II bottom brackets!
- Bearings: Enduro Ceramic Hybrid
- Color: Gray
- Bottom Bracket/Frame Interface: ISO/English or BSA Threaded (1.37 in x 24 TPI)
- Bottom Bracket Shell Width (mm): 68mm
- Bottom Bracket Shell I.D.: 33.6-33.9 mm
- Crank Spindle Type: HollowTech II (Shimano, FSA, Etc.)
- Crank Spindle Diameter: 24mm
- Weight: 92g
- Packaged for retail display
Compatible with the following Bottom Bracket Standards:
- ISO/English or BSA Threaded (1.37 in x 24 TPI)
- 68mm BB Shell Width
Compatible with the following cranksets with 24mm spindle diameter:
- Shimano HollowTech II
- RaceFace EXI, X-Type, MegaExo
- Rotor 3D, Agilis
Enduro Ceramic Hybrid Bearings
Enduro Ceramic Hybrid bearings have Grade 5 ceramic balls with ABEC 5 chromium steel races. Bearings are made from pure Silicon Nitride material with extreme high density from uniform compaction, the micro-structural development of this material during manufacturing is second to none.
Grade 5 Si3n4 Ceramic Balls:
- High precision balls are within 5/1,000,000″ round, 60% lighter weight, and 7 times harder than steel.
52100 High Carbon Chromium Alloy Races:
- Vacuum de-gassed process for the purest chromium alloy steel, hardened to R-62, extremely tough and very durable. Polished to a mirror finish for ABEC-5 precision and noiseless movement.
The bearing seals are dual lip, groove type seals rather than standard 2RS types that other manufacturers use; one lip to keep the dirt out and the other to keep the 90% grease fill inside. Bearings are filled both sides with Rheolube grease for the best protection and long lasting set up. Another external seal with dual lips on both sides and made from the best Silicone material guards from water and dirt penetration.
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